Campaigning for Sunday’s crucial by-election for the Howrah Lok Sabha constituency ended on Friday amid intense speculation that the Trinamool Congress is warming to the Bharatiya Janata Party.

In an election where its candidate is pitted against former ally, the Congress, as well as the Left Front, the withdrawal of the BJP candidate from the fray is being considered a move to bolster the prospects of the Trinamool Congress.

“It has become clear that the Trinamool Congress has tied up with the BJP,” chairperson of the Left Front Committee Biman Bose said while campaigning in support of the Left Front candidate during the day.